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object_pool.h
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object_pool.h
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#pragma once
#include "core/core.h"
#include "core/ecs/ecs.h"
namespace Nata
{
class EEntity;
template<typename T>
struct FObject
{
T* Object;
FObject* Next;
FObject()
{
Object = nullptr;
Next = nullptr;
}
FObject(T* obj)
{
Object = obj;
Next = nullptr;
}
FObject(T* obj, FObject* next)
{
Object = obj;
Next = next;
}
};
template<typename T>
class NObjectPool
{
protected:
unsigned int Size;
std::vector<FObject<T>*> m_Objects;
FObject<T>* m_CurrentObj;
public:
NObjectPool(unsigned int size)
{
unsigned int id = 0;
Size = size;
m_Objects.reserve(Size);
for (unsigned int i = 0; i < Size; i++)
{
FObject<T>* obj = new FObject<T>();
m_Objects.push_back(obj);
}
for (unsigned int i = 0; i < Size - 1; i++)
{
T* entity = Instantiate<T>(NEngine::World, false);
m_Objects[i]->Object = entity;
m_Objects[i]->Next = m_Objects[i + 1];
}
T* entity = Instantiate<T>(NEngine::World, false);
m_Objects[Size - 1]->Object = entity;
m_Objects[Size - 1]->Next = nullptr;
m_CurrentObj = m_Objects[0];
}
T* Create(vec3 position)
{
if (m_CurrentObj == nullptr)
{
std::cout << "OBJECTPOOL::CREATE : Maxed out pool" << std::endl;
return nullptr;
}
FObject<T>* temp = m_CurrentObj;
temp->Object->Transform->Position = position;
temp->Object->SetEnable(true);
m_CurrentObj = m_CurrentObj->Next;
return temp->Object;
}
void Delete(EEntity* entity)
{
for (unsigned int i = 0; i < Size; i++)
{
if (entity == m_Objects[i]->Object)
{
m_Objects[i]->Object->SetEnable(false);
m_CurrentObj = m_Objects[i];
return;
}
}
}
};
}